CN106458066B - Load detecting device - Google Patents
Load detecting device Download PDFInfo
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- CN106458066B CN106458066B CN201680001508.0A CN201680001508A CN106458066B CN 106458066 B CN106458066 B CN 106458066B CN 201680001508 A CN201680001508 A CN 201680001508A CN 106458066 B CN106458066 B CN 106458066B
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- electrode
- load
- seat
- detection sensor
- detecting device
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- 238000001514 detection method Methods 0.000 claims abstract description 141
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 76
- 239000002184 metal Substances 0.000 claims description 84
- 229910052751 metal Inorganic materials 0.000 claims description 84
- 125000006850 spacer group Chemical group 0.000 claims description 27
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- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
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- KYTZHLUVELPASH-UHFFFAOYSA-N naphthalene-1,2-dicarboxylic acid Chemical compound C1=CC=CC2=C(C(O)=O)C(C(=O)O)=CC=C21 KYTZHLUVELPASH-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
- B60N2/0021—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement
- B60N2/003—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement characterised by the sensor mounting location in or on the seat
- B60N2/0032—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement characterised by the sensor mounting location in or on the seat mounted on springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/70—Upholstery springs ; Upholstery
- B60N2/7094—Upholstery springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/90—Details or parts not otherwise provided for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
- H01H13/16—Operating parts, e.g. push-button adapted for operation by a part of the human body other than the hand, e.g. by foot
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
- A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
- A47C31/126—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/02—Seat parts
- A47C7/28—Seat parts with tensioned springs, e.g. of flat type
- A47C7/30—Seat parts with tensioned springs, e.g. of flat type with springs meandering in a flat plane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2210/00—Sensor types, e.g. for passenger detection systems or for controlling seats
- B60N2210/40—Force or pressure sensors
- B60N2210/46—Electric switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2203/00—Form of contacts
- H01H2203/036—Form of contacts to solve particular problems
- H01H2203/038—Form of contacts to solve particular problems to be bridged by a dome shaped contact
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2205/00—Movable contacts
- H01H2205/016—Separate bridge contact
- H01H2205/018—Support points upwardly concave
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Seats For Vehicles (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Push-Button Switches (AREA)
Abstract
Load detecting device (1) has: load detection sensor unit (SU), has upper surface (47S), the 1st electrode (52) and the 2nd electrode (62) pressed by seat cushion (SC)；And pedestal (2), it cuts and sets for load detection sensor unit (SU).So that the angle relative to mounting surface (21S) of upper surface (47S) generates the mode of variation, keep upper surface (47S) mobile relative to mounting surface (21S).
Description
Technical field
The present invention relates to load detecting devices, and it is suitable for suitably detecting load.
Background technique
As one in the security system of vehicle, practical application warns sending the case where not fastening one's safety belt while taking a bus
The alarm system of announcement.In the alarm system, the case where fastening one's safety belt is not perceived in the state taken one's seat for perceiving people
Under, it gives a warning.As the device perceived of taking one's seat to the people, exists to use and the load by generation of taking one's seat is detected
Load detecting device.
As such load detecting device, there is the load detecting device being configured under the seat cushion of seat.It is filled in seat
In setting, there is a situation where that seat cushion is configured on seat bucket seat and seat cushion is configured on the fixed multiple S-shaped springs of frame
The case where.In the seat unit that seat cushion is configured on multiple S-shaped springs, there are load detecting devices to be locked to S-shaped spring
Come be subject to using the case where.In following patent documents 1, the detection device of taking one's seat as this load detecting device is recorded.
Detection device of taking one's seat documented by patent document 1 includes the pedestal for being locked to S-shaped spring；And it is configured at via spacer
Thin film switch on pedestal.
Patent document 1: Japanese Unexamined Patent Publication 2011-105278 bulletin
However, in the state that people is normally seated at seat, being applied from seat cushion to S-shaped spring in general seat unit
The direction of the load added becomes the direction vertical relative to S-shaped spring face locating for each S-shaped spring.The S-shaped spring face is false
Think face.Therefore, the load detecting device for being locked to S-shaped spring is constituted are as follows: from seat cushion along the side vertical relative to S-shaped spring face
In the case where being pressed, suitably detect by the load for generation of taking one's seat.In addition, normally taking one's seat is to be located at seat surface with buttocks
The meaning that the state that depths and back are contacted with the chair back is taken one's seat.But the people to take one's seat will do it sometimes: than normally taking one's seat more
By front side take one's seat it is forward take one's seat, relative to normally take one's seat transversely offset in the state of take one's seat lean to one side to take one's seat.In this way
In the case where, the lower surface of seat cushion exists relative to the inclined trend in S-shaped spring face.Additionally, there are take one's seat because having cargo in arms
The case where or other the reason of and cause to seat cushion apply load balance collapse so that the lower surface of seat cushion is relative to S-shaped
The case where spring face tilts.In these cases, there are the lower surface of seat cushion relative to due to by seat cushion press and detect by
Take one's seat generation load load detecting device the inclined trend of press surface.
In this way, relative to load detecting device, if the lower surface of seat cushion and the press surface of load detecting device are mutually inclined,
Then there is the worry that can not suitably detect the load by the generations such as take one's seat.
Summary of the invention
Therefore, the object of the present invention is to provide the load detecting devices that one kind can suitably detect load.
In order to solve the above problems, load detecting device of the invention is characterized in that having: load detection sensor list
Member has by press surface that seat cushion presses and due to above-mentioned press surface is pressed and is contacted a pair of electrodes；And pedestal,
It has the mounting surface for loading above-mentioned load detection sensor unit, and above-mentioned load detecting device is so that above-mentioned press surface entirety phase
Keep above-mentioned press surface whole mobile relative to above-mentioned mounting surface the mode that the angle of above-mentioned mounting surface generates variation.
According to this load detecting device, since the whole angle relative to mounting surface of the press surface pressed by seat cushion generates
Variation, so even if press surface can also follow the inclination in the inclined situation in the lower surface of seat cushion.Therefore, press surface quilt
The lower surface of seat cushion suitably presses, so as to suitably detect load.The load detecting device is arranged in seat unit
Seat cushion get off to carry out the device of the detection by the load for generation of taking one's seat, the seat cushion progress of getting off that is configured at nursing bed is produced by implantation
Device of the detection of raw load etc., the device for being able to detect the load applied to various seat cushions.
Additionally, it is preferred that above-mentioned seat cushion is the seat cushion of seat unit, the above-mentioned angle on the front-rear direction of above-mentioned seat unit
Variable quantity it is bigger than the variable quantity of the above-mentioned angle on the left and right directions of above-mentioned seat unit.
Generally, the seated position of the people to take one's seat is in front-rear direction than having more individual differences in the lateral direction.Therefore,
There are the lower surfaces of seat cushion to have more the trend significantlyd change than upper angle in left and right directions in front-rear direction.Therefore, in load
In the case that detection device is used for seat unit, press surface and the angle on the front-rear direction of seat unit formed by mounting surface
Variable quantity is bigger than the variable quantity of the angle on left and right directions, so that press surface can follow the inclination of the lower surface of seat cushion.Therefore,
It can more suitably detect by the load for generation of taking one's seat.In addition, even if press surface the angle relative to mounting surface on a left side
Do not change in the case where the structure that changes in the longitudinal direction in right direction, also can satisfy above structure.
Additionally, it is preferred that above-mentioned load detection sensor unit have be formed as one with above-mentioned press surface and from it is above-mentioned by
The pressure surface axle portion that laterally above-mentioned mounting surface side extends, above-mentioned press surface are integrally rotated centered on the front end of above-mentioned axle portion.
It is rotated centered on the front end of axle portion since press surface is whole, so that load detection sensor unit can either be simplified
Structure, and can suitably make the angle change of press surface.In addition, since axle portion is to the extension of mounting surface side and with axle portion
It rotates centered on front end, so axle portion does not bear load directly, and is born by the press surface of load detection sensor unit
Pressing force, therefore can be turned while the friction of the press surface for the bottom surface and load detection sensor unit for reducing seat cushion
It is dynamic.In addition, the center position of seat cushion bottom surface towards load is displaced slightly when applying load to seat cushion, but at this point, seat cushion
Bottom surface side and load detection sensor unit contact edge are displaced.At this point, due to being rotated centered on the front end of axle portion, so can
The power applied to load detection sensor unit is discharged, so as to improve durability.
In such a situation it is preferred that above-mentioned axle portion is pressed using a side of the above-mentioned front end to above-mentioned a pair of electrodes.
Since axle portion doubles as the casting die pressed electrode, so as to the increase of suppression component number of packages.
Or, it is preferable that above-mentioned load detection sensor unit has the electricity to the above-mentioned pedestal side in above-mentioned a pair of electrodes
The axle portion that pole is pressed, above-mentioned press surface are integrally rotated centered on the front end of above-mentioned axle portion.
In this case, since press surface is pressed, so that axle portion presses electrode from downside.Moreover, press surface is with the axis
It is rotated together centered on the front end in portion with electrode, so that press surface can follow the inclination of seat cushion.
Additionally, it is preferred that above-mentioned load detection sensor unit also includes the spacer for being formed with opening；And it is set to
A pair of electrodes piece on the two sides of above-mentioned spacer, above-mentioned a pair of electrodes are set to the above-mentioned spacer side of above-mentioned a pair of electrodes piece
Face is simultaneously mutually opposed across above-mentioned opening, the electrode slice of the above-mentioned axle portion side in above-mentioned a pair of electrodes piece at least be provided with
The position of the position overlapping of above-mentioned a pair of electrodes has metal plate.
In the load detecting device for having this load detection sensor unit, if the following table of seat cushion moves downwards
And press surface is pressed, then because of the pressing force metal plate is pressed by axle portion.Make gold because of the pressing of the metal plate
Belong to plate flexure, so that the electrode of a side of the side configured with metal plate is pressed because of the flexure of the metal plate, then and separately
The electrode of one side contacts and makes switch connection.It takes one's seat in this way, detecting.However, even if metal generates the feelings of variation in temperature
Condition is lower flexible to be also unlikely to change.Therefore, even if in the case that the environment temperature around load detecting device generates variation, quilt
The flexure mode of the metal plate of axle portion pressing is also unlikely to change.Therefore, according to the load detecting device, even if in environment temperature
In the case where generating variation, it is also able to suppress the error detections such as take one's seat.In addition, due to a part of axle portion to metal plate carry out by
Pressure, so metal plate can be made suitably to be bent, takes one's seat so as to suitably detect.In addition, metal is difficult compared with resin
To generate creep, therefore even if a part is pressed by axle portion, it is also difficult to cause impression to metal plate.Therefore, according to above-mentioned
The load detecting device of the load detection sensor unit of structure can either be detected suitably and take one's seat etc. and be able to suppress by impression
The error detection taken one's seat Deng caused by etc..
In such a situation it is preferred that the above-mentioned electrode slice of the above-mentioned axle portion side in above-mentioned a pair of electrodes piece is by above-mentioned metal plate
It constitutes, above-mentioned metal plate becomes at least part of the electrode of the above-mentioned electrode slice of above-mentioned axle portion side.
In this way, so as to suppression component number of packages, and can suitably detect and take one's seat since metal plate doubles as electrode.
Alternatively, the above-mentioned electrode slice of the above-mentioned axle portion side in above-mentioned a pair of electrodes piece also may include: insulating trip and match
The above-mentioned metal plate being placed on the face of the above-mentioned axle portion side of above-mentioned insulating trip.
Additionally, it is preferred that above-mentioned seat cushion is the seat cushion of seat unit, the above-mentioned angle on the front-rear direction of above-mentioned seat unit
The variable quantity of degree is at 5 degree or less.
Due to the lower surface of the seat cushion under forward take one's seat angle variable quantity at 5 degree hereinafter, so making on front-rear direction
Press surface and mounting surface angulation variable quantity it is bigger than 5 degree meaning deficiency.In addition, being generated if the angle is larger
The worry of the strength reduction of load detecting device.Therefore, by making press surface and the angle of seat unit formed by mounting surface
Variable quantity hereinafter, to can either maintain the intensity of load detecting device, and can follow the variation of seat cushion lower surface at 5 degree.
Additionally, it is preferred that the variable quantity on the above-mentioned front-rear direction of above-mentioned angle is at 0.5 degree or more.
In the case where normally taking one's seat, the variation at the inclination angle of seat cushion lower surface is at most less than 0.5 degree.That is, in seat cushion
In the case that the variation at the inclination angle of lower surface is in 0.5 or more, the people to take one's seat to seat unit carries out the forward possibility taken one's seat
Property is higher.Therefore, by make seat unit formed by press surface and mounting surface angle variable quantity at 0.5 degree or more, thus
Even if take one's seat in a manner of the people to take one's seat taking one's seat other than normally to take one's seat, press surface can also follow seat cushion
The inclination of lower surface.
As described above, in accordance with the invention it is possible to provide a kind of load detecting device that can suitably detect load.
Detailed description of the invention
Fig. 1 is the exploded view for indicating the structure of load detecting device involved in the 1st embodiment of the invention.
Fig. 2 is to indicate that the load detecting device of Fig. 1 is installed on the cross-sectional view of the appearance of S-shaped spring.
Fig. 3 is the partial enlarged view of Fig. 2.
Fig. 4 is to indicate that the load detecting device of Fig. 1 is installed on the perspective view of the appearance of S-shaped spring.
Fig. 5 is the cross-sectional view of the load detecting device of Fig. 1 on the face in the front-back direction along seat unit.
Fig. 6 is in the case where indicating the case where people to take one's seat to seat unit is normally taken one's seat and carrying out forward take one's seat
, the figure of the relationship of the angle with respect to the horizontal plane of load and seat cushion lower surface.
Fig. 7 is the exploded view for indicating the structure of load detection sensor of Fig. 1.
Fig. 8 is the cross-sectional view of the X-X line of the load detection sensor of Fig. 7.
Fig. 9 is the cross-sectional view of the Y-Y line of the load detection sensor of Fig. 7.
Figure 10 is the figure for indicating the equivalent circuit of load detection sensor of Fig. 7.
Figure 11 is the figure for indicating the on-state of load detecting device of Fig. 7.
Figure 12 is the figure for indicating load detecting device involved in the 2nd embodiment of the invention.
Figure 13 is the figure for indicating load detecting device involved in the 3rd embodiment of the invention.
Specific embodiment
Hereinafter, being carried out specifically referring to preferred embodiment of the attached drawing to load detecting device according to the present invention
It is bright.In addition, in order to make it easy to understand, there is a situation where that the scale bar of each figure is different from scale bar documented by the following description.
(the 1st embodiment)
Fig. 1 is the exploded view for indicating the structure of load detecting device of present embodiment, and Fig. 2 is to indicate load detecting device
1 is installed on the cross-sectional view of the appearance of the S-shaped spring of seat unit.In addition, Fig. 2 is on face along the left and right directions of seat unit
Load detecting device 1 cross-sectional view.As shown in Figure 1 and Figure 2, load detecting device 1 has pedestal 2 and is placed in pedestal 2
On load detection sensor cell S U as main structure.In addition, in the present embodiment, being to load detecting device 1
The case where detection device of taking one's seat, is illustrated.
Pedestal 2 includes the mounting portion 21 for load detection sensor cell S U mounting；And link with the mounting portion 21
A pair of of hook portion 22.The face of the upside of mounting portion 21 is formed as the mounting surface 21S loaded for load detection sensor cell S U.Separately
Outside, in mounting portion 21, it is formed with the face (side opposite with mounting surface 21S of the downside penetrated through from mounting surface 21S to mounting portion 21
Face) multiple through holes 23.Pedestal 2 is for example by being formed metal plate, and in this case, plate thickness is, for example,
0.8mm。
A pair of of hook portion 22 is respectively arranged at mutually opposed position in a manner of across mounting portion 21, and be respectively embedded into
A pair of of S-shaped spring of the adjoining in multiple S-shaped springs 100 of the opening strung alongside of frame in the seat unit of vehicle
100.Therefore, each hook portion 22 is the fastener that pedestal 2 is locked to S-shaped spring 100.In the present embodiment, a pair of of hook portion
22 are formed as along the transversely arranged of seat unit, and are embedded in adjacent a pair of of S-shaped spring 100 in the transverse direction.In addition, one
Hook portion 22 is so embedded in the state of adjacent a pair of of S-shaped spring 100, mounting portion 21 is located in multiple S-shaped springs 100
The lower section of the seat cushion SC of upper mounting, and in the case where multiple S-shaped springs viewed from above, it cuts and sets the configuration of portion 21 in a pair
Between S-shaped spring 100.In the state that a pair of of hook portion 22 is embedded in a pair of of S-shaped spring 100 as described above, in this implementation
In mode, position of the mounting surface 21S positioned at the lower end 102 than each S-shaped spring 100 more on the lower.
In addition, as shown in Figure 1, load detection sensor cell S U has shell 3, case cover 4 and load detection sensing
Device 5 is used as main structure.
As shown in Figure 1 and Figure 2, shell 3 includes the connector portion 31 being connect with vehicle (not shown) with control unit；And
With the switch receiving portion 32 of the connector portion 31 connection.Switching receiving portion 32 has bottom wall 37 and frame wall 38, by the bottom wall 37
And frame wall 38 is formed with the accommodating space CA of receiving load detection sensor 5.In addition, in the present embodiment, in order to inhibit
Deformation when resin forming implements thinned processing to frame wall 38.
Bottom wall 37 in switch receiving portion 32 is provided with a pair of of fastening pin 33 and a pair of of connecting pin 34.A pair is fixed
With pin 33 namely for pin that the load detection sensor 5 being housed in shell 3 is fixed.In addition, a pair of of connecting pin
34 with the bonder terminal of connector portion 31 namely for being electrically connected and being electrically connected with load detection sensor 5, thus will
The pin that bonder terminal is electrically connected with load detection sensor 5.In addition, the connector end of connector portion 31 is omitted in Fig. 1
Son.
The lateral surface of the frame wall 33 of switch receiving portion 32 is provided with a pair of of protrusion tab 35.In the present embodiment, above-mentioned
A pair of of protrusion tab 35 along the horizontally disposed way of seat to be arranged.In addition, being provided with insertion pedestal 2 in the lower end of frame wall 38
Multiple hook tabs 36 of each through hole 23.By the way that each hook tabs 36 to be embedded in each through hole 23 of pedestal 2, thus by shell 3
It is fixed on pedestal 2, load detection sensor cell S U is placed in the mounting surface 21S of pedestal 2 as described above as a result,.
Case cover 4 is the cover of the accommodating space CA of overlay switch receiving portion 32, with roof 47 and frame wall 48.
The lower end of the frame wall 48 of case cover 4 is provided with a pair of of arm 41.It is provided through in each arm 41 for being received in switch in shell 3
The opening 42 that the protrusion tab 35 that the frame wall 38 in appearance portion 32 is arranged is embedded in.By the way that a pair of of protrusion tab 35 of shell 3 is respectively embedded into one
Opening 42 respective to arm 41, so that case cover 4 be made to be locked to shell 3.Therefore, the state of shell 3 is locked in case cover 4
Under, a pair of of arm 41 becomes the state from the lateral clamping shell 3 of seat.
In the roof 47 of case cover 4, it is provided with the medial surface opposed with the switch bottom wall 37 of receiving portion 32 from shell 3
Switch press portion 43 outstanding.The convex curve form in the front end in switch press portion 43, case cover 4 cover shell 3 and
Each opening 42 has been respectively embedded into the state of protrusion tab 35, the switch contact of the front end and load detection sensor 5.In addition,
As the material of case cover 4, polycarbonate (PC), polyamide (PA), polybutylene terephthalate (PBT) (PBT), phenol can be enumerated
The resins such as urea formaldehyde, epoxy resin.
In this way, in the state that the switch press portion 43 of case cover 4 and load detection sensor 5 contact, as shown in Fig. 2,
The roof 47 of case cover 4 is separated with the frame wall 38 of shell 3, has the gap GA to be formed.
In this way, in the state that the load detecting device 1 that composition finishes is installed on a pair of of S-shaped spring 100, case cover 4
The upper surface 47S of roof 47 is opposed with the lower surface of seat cushion SC across defined distance.Upper surface 47S is formed as plane
Shape.Upper surface 47S is the face pressed by seat cushion SC, can be understood as the press surface of load detecting device 1.
Fig. 3 is the partial enlarged view of Fig. 2.As shown in figure 3, the state that upper surface 47S is not pressed be not detected by
In the state of the load of generation of taking one's seat, upper surface 47S becomes higher than the upper end 101 of S-shaped spring 100 as shown in dotted line SHP
Position, and in the present embodiment, upper surface 47S becomes the position lower than the upper end 22U of the hook portion 22 as fastener
It sets.
In addition, the lower surface of seat cushion SC is not with S-shaped spring 100, the shape of the marking of hook portion 22 in unused seat unit
Under state, the lower surface of seat cushion SG is formed as planar as illustrated in fig. 2.On the other hand, it is used in seat unit, seat cushion SC's
Lower surface with S-shaped spring 100, hook portion 22 the marking in the state of, the lower surface of seat cushion SC is not planar.Even if in the feelings
Under condition, the average height position of the lower surface of the seat cushion SC when load by generation of taking one's seat is not detected also is located at than case cover 4
The upper position upper surface 47S.Therefore, the lower surface for being able to suppress seat cushion SC unnecessarily presses the upper of case cover 4
The case where surface 47S.
Fig. 4 is to indicate that load detecting device 1 is installed on the perspective view of the appearance of S-shaped spring 100.In addition, Fig. 5 is along seat
The cross-sectional view of the load detecting device in the front-back direction 1 of chair apparatus.In addition, in Fig. 5, in order to make it easy to understand, being omitted than even
Connect a part of components such as device portion 31, the component of pedestal 2 on the lower.As described above, in the front end in the switch press portion 43 of case cover 4
In the state of contacting with load detection sensor 5, gap GA is formed between the roof 47 of case cover 4 and the frame wall 38 of shell 3.
Therefore, case cover 4 can be on shown in the arrow in Fig. 4 the direction F-B (front-rear direction), using the switch press portion as axle portion
It is obliquely rotated centered on 43 front end.In Fig. 5, the so inclined appearance of case cover 4 is shown with chain-dotted line.In addition,
Although being omitted in Fig. 2, Fig. 3, case cover 4 also can on the direction R-L shown in the arrow in Fig. 4, using as
It is obliquely rotated centered on the front end in the switch press portion 43 of axle portion.That is, being seen along the direction mounting surface 21S of pedestal 2
In the case where examining, the upper surface 47S of case cover 4 integrally can so that upper surface 47S the angle change relative to mounting surface 21S
Mode, along the longitudinal direction and left and right directions is mobile relative to mounting surface 21S.But such as due to a pair of of arm 41 of case cover 4
It is above-mentioned to clamp shell 3 from the lateral of seat unit like that, so the angle that case cover 4 rotates is formed as the front-rear direction of seat
It is bigger than left and right directions.Further, since upper surface 47S is not divided, so upper surface 47S is moved integrally.
Fig. 6 is in the case where indicating the case where people for occupying seat unit is normally taken one's seat and carrying out forward take one's seat
, the figure of the relationship of the angle with respect to the horizontal plane of load and seat cushion lower surface.As shown in fig. 6, the case where normally taking one's seat
Under, in the range of until load to 500N, the angle of the lower surface of seat cushion is limited on the basis of original state at front, rear
Variation less than 0.5 degree.Very important person is normally taken one's seat, and is considered as the trend in the case where load is more than 500N not
Variation.But in the case where forward take one's seat, in the range of until load to 500N, the angle of the lower surface of seat cushion and just
Beginning state is compared to 5 degree or so of variation.In addition, generating switch if case cover 4 rotates in a manner of more than 5 degree from original state
The worry of the strength reduction of the load detecting device 1 of the deformation of press section 43 or the like.It is preferable therefore that make the rotation of case cover 4
Angle is at 5 degree or less.Therefore, it is also preferred that making the upper surface 47S of case cover 4 with 5 degree of angular turns below.In addition, as above-mentioned
Like that when normally taking one's seat, the angle of the lower surface of seat cushion is on the basis of original state in the range of front, rear less than 0.5 degree
Interior generation variation.Therefore, in the case where the variation at the inclination angle of seat cushion lower surface is in 0.5 degree or more, just to seat unit
It is higher that the people of seat carries out forward a possibility that taking one's seat.Therefore, by making the upper surface 47S of case cover 4 also with original state base
0.5 degree of quasi- rotation or more, so as at least one with the tilt angle varied at least leading to seat cushion lower surface because of forward take one's seat
Part accordingly tilts upper surface 47S.
Next, the load detection sensor 5 accommodated to the switch receiving portion 32 of shell 3 is illustrated.
Fig. 7 is the exploded view for indicating the structure of load detection sensor 5.In addition, Fig. 8 is that load detection shown in Fig. 7 passes
The cross-sectional view of the X-X line of sensor 5, Fig. 9 are the cross-sectional views of the Y-Y line of load detection sensor 5 shown in Fig. 7.
As shown in fig. 7~fig. 9, load detection sensor 5 has the 1st electrode slice 50, the 2nd electrode slice 60 and spacer
70 are used as main structure.
Substrate 51 of 1st electrode slice 50 for example with not flexible insulating properties.As the material of substrate 51, phenol can be enumerated
Urea formaldehyde or epoxy resin etc..The face F1 of a side opposed with the 2nd electrode slice 60 in the substrate 51, configured with the 1st electricity
Pole 52 and the 1st contact portion 53.
1st electrode 52 is the electrode for constituting a side of switch SW, for example formed as circular metal printing brush layer.In addition,
1st contact portion 53 by by the generally rectangular contact area AR1 contacted with the 2nd electrode slice 60 and with the 2nd electrode slice 60
Non-contacting non-contact area AR2 is connected with each other.
In substrate 51, the face F2 of another party of the side opposite with the face F1 of a side becomes load detection sensor 5
Lower surface is configured with resistance 54 in the face F2 of the another party.Resistance 54 is the resistance for detecting broken string, in present embodiment
In, resistance 54 is made of plate resistor.
It is formed in substrate 51 from the face F1 of a side of the substrate 51 and penetrates through to multiple through holes of the face F2 of another party, it
Be respectively formed as the 1st through hole 55A, the 2nd through hole 55B, fixed with through hole 55C, 55D and pin through hole
55E、55F。
1st through hole 55A is in the region configured with the 1st electrode 52 in the face F1 for the side that opening is located at substrate 51
Piece through hole.It is provided with the 1st electroconductive component CPA in the 1st through hole 55A, it, will via the 1st electroconductive component CPA
The circuit position for being configured at the face F2 of another party of substrate 51 is electrically connected with the 1st electrode 52.As a result, the 1st electroconductive component CPA with
Resistance 54 is electrically connected, as a result, the 1st electrode 52 is electrically connected with resistance 54.In addition, the 1st electroconductive component CPA is set to the 1st
On the inner peripheral surface of piece through hole 55A, the air surrounded by the 1st electroconductive component CPA is formed in the 1st through hole 55A
Hole SP.
2nd through hole 55B is the area configured with the 1st contact portion 53 in the face F1 for the side for making opening be located at substrate 51
Piece through hole in domain.In the present embodiment, the opening of the 2nd through hole 55B is located at the non-contact area of the 1st contact portion 53
In AR2.
The 2nd electroconductive component CPB is filled in the 2nd through hole 55B.It, will be via the 2nd electroconductive component CPB
The circuit position of the face F2 configuration of another party of substrate 51 is electrically connected with the non-contact area AR2 of the 1st contact portion 53, in substrate 51
Another party face F2 in, the 2nd electroconductive component CPB is connect with resistance 54.Therefore, resistance 54 is electrically connected with the 1st contact portion 53.
Since the 1st electrode 52 is electrically connected as described above with resistance 54, so the 1st electrode 52, resistance 54 and the 1st contact portion 53
Successively it is electrically connected in series.
It is fixed for a pair being arranged in the bottom wall 37 of switch receiving portion in shell 3 for fixing with through hole 55C, 55D
The through hole that pin 33 is inserted.The fixation diameter of through hole 55C, 55D and the outer diameter of a pair of of fastening pin 33 are same degree.
Pin is the through hole inserted for being set to a pair of of connecting pin 34 of shell 3 with through hole 55E, 55F.It is penetrated through in pin
The distal portion that is, terminal 5A of one side of the circuit of hole 55E being internally provided in load detection sensor 5 is penetrated through in pin
The distal portion that is, terminal 5B of the another party for the circuit of hole 55F being internally provided in load detection sensor 5.Terminal 5A electricity
It is connected to the contact of the 1st electrode 52 and resistance 54, terminal 5B is electrically connected to the contact of resistance 54 and the 1st contact portion 53.In addition, end
Sub- 55B is arranged along the corresponding pin inner peripheral surface of through hole 55E, 55F, by the width in the space surrounded the terminal 5A, 5B with
The outer diameter of connecting pin 34 is same degree.If a pair of of connecting pin 34 is inserted through above-mentioned pin through hole 55E, 55F, terminal 5A with
The connecting pin 34 of one side is electrically connected, and terminal 5B is electrically connected with the connecting pin 34 of another party.
There is 2nd electrode slice 60 sheet metal 61, the 2nd electrode 62 and the 2nd contact portion 63 to be used as main structure.
Sheet metal 61 is the metal plate of flexible thinner thickness, is formed to have in the present embodiment than substrate 51
The short longitudinal width of longitudinal width and the thinner thickness with the transverse width same with the transverse width of the substrate 51 length
Cube shape.As the material of sheet metal 61, as long as metal, just there is no particular limitation, such as enumerate copper, stainless steel etc..
It is formed in sheet metal 61 from the face of a side of the sheet metal 61 and penetrates through to the fixation through hole in the face of another party
65C,65D.Fixing with through hole 65C, 65D is for a pair of of the fastening pin being arranged in the bottom wall of switch receiving portion in shell 3
The through hole of 33 inserts is formed as fixation through hole 55C, 55D phase similar shape with the formation of substrate 51 in the 1st electrode slice 50
Shape, same size.In addition, the 2nd electrode 62 and the 2nd contact portion 63 relative to the fixed configuration position with through hole 65C, 65D,
With in the 1st electrode slice 50 the 1st electrode 52 and the 1st contact portion 53 relative to the fixed configuration position for using through hole 55C, 55D
As relatively identical positional relationship, in the case where keeping the 1st electrode slice 50 Chong Die with sheet metal 61, fixed through hole
55C uses through hole 65C overlapped with fixed, fixed overlapped with through hole 55D and fixed through hole 65D.
2nd electrode 62 is the electrode for constituting another party of switch SW, is the gold being made of metal plate in the present embodiment
Belong to the position opposed with the 1st electrode 52 across spacer 70 in piece 61.That is, a part of sheet metal 61 doubles as the 2nd electrode
62.In addition, for example, it is also possible to using from the metal layer of the identical material of sheet metal 61 or different materials as the 2nd electrode 62,
And be configured in sheet metal 61 across spacer 70 and the position opposed with the 1st electrode 52.
2nd contact portion 63 is the component for constituting a side of connection maintenance portion AP, is formed as leaf spring in the present embodiment.
That is, across specified interval being provided with from one end of the sheet metal 61 towards a pair that another side extends and cutting in sheet metal 61
Mouth 61A and 61B (Fig. 1), above-mentioned notch 61A become the 2nd contact portion 63 with position folded by 61B (Fig. 1).In addition, so that should
Sheet surface inclined mode of 2nd contact portion 63 relative to sheet metal 61, the root of the 2nd contact portion 63 is electric towards the 1st
50 lateral bending of pole piece folding, so that the 2nd contact portion 63 be made to be formed as leaf spring.In this way, in sheet metal 61, and become the 2nd electrode 62
The different position in position forms the 2nd contact portion 63.In the case where the 1st electrode slice 50 is Chong Die with the 2nd electrode slice 60, the 2nd is formed
The position of contact portion 63 becomes the position Chong Die with the contact area AR1 of the 1st contact portion 53.In addition, being formed as the 2nd contact portion 63
The shape of leaf spring be for example also possible to the width trapezoidal shape bigger than the width of open end of root, can be using rectangle, trapezoidal
Various shape in addition.In addition, as the 2nd contact portion 63, can by from the identical material of sheet metal 61 or different materials
Metal layer be configured at 50 side of the 1st electrode slice of sheet metal 61.
Spacer 70 is the insulating part for the thinner thickness being clamped between the 1st electrode slice 50 and the 2nd electrode slice 60,
Be formed as in present embodiment with from sheet metal 61 remove the 2nd contact portion 63 after sheet metal same general shape, same size.
As the material of spacer 70, poly terephthalic acid (PET), polyimides (PI) or poly- naphthalenedicarboxylic acid (PEN) etc. can be enumerated
Resin.
Opening 71 is formed in the spacer 70.The opening 71 is formed in the 1st electrode 52 for being configured at substrate 51 and and should
Between 2nd electrode 62 of the opposed sheet metal 61 of the 1st electrode 52, it is formed in the vertical direction and the 52 and the 2nd electricity of the 1st electrode
The position that pole 62 is overlapped.The size of opening 71 becomes the state more slightly smaller than the size of the 1st electrode 52.
In addition, being formed with the opening 72 of slit-shaped in spacer 70.The opening 72 is in the 1st contact portion for being configured at substrate 51
53, between the 2nd contact portion 63 of the opposed sheet metal 61 of the 1st contact portion 53, are formed in connect with the 1st in the vertical direction
Point portion 53 and the position of the 2nd contact portion 63 overlapping.The size of opening 72 becomes than being formed as the 2nd contact portion in sheet metal 61
The slightly larger state of the size of 63 leaf spring.
Also, spacer 70 be formed with penetrated through from the face of a side of the spacer 70 it is fixed with passing through to the face of another party
Through-hole 75C, 75D.Fixing with through hole 75C, 75D is for the fastening pin being arranged in the bottom wall of switch receiving portion in shell 3
The through hole of 33 inserts, fixation through hole 55C, 55D same shape, phase with the formation of substrate 51 in the 1st electrode slice 50
Same size.In addition, opening 71 in spacer 70 and opening 72 relative to the fixed configuration position with through hole 75C, 75D,
With in the 1st electrode slice 50 the 1st electrode 52 and the 1st contact portion 53 relative to the fixed configuration position for using through hole 55C, 55D
As relatively identical positional relationship.Therefore, make the 1st electrode slice 50, spacer 70 and the overlapping of the 2nd electrode slice 60
In the case of, fixed overlapped with through hole 55C, fixed through hole 65C and fixed through hole 75C, fixed perforation
Hole 55D, it fixes with through hole 65D and fixes overlapped with through hole 75C.
Such 1st electrode slice 50, the 2nd electrode slice 60 and spacer 70 are overlapped and constitute load detection sensor 5.?
In load detection sensor 5, as shown in figure 8, the 1st electrode 52 is opposed across opening 71 with the 2nd electrode 62, to form switch
SW.In the state that the 1st electrode 52 is separated with the 2nd electrode 62, the 1st electrode 52 is, for example, 0.1mm at a distance from the 2nd electrode 62.
Moreover, the airport SP being formed in electrode through hole 52A is connected to opening 71.Therefore, the 2nd electrode 62 bend and with the 1st
In the case that electrode 52 contacts, unnecessary air can be discharged from airport SP to the external of load detection sensor 5.This
Sample, the 1st through hole 55A is not only used for will be in the 1st electrode 52 that the face F1 of a side of substrate 51 is configured and another party's
The hole of the circuit position electrical connection of the face side F2 configuration, also as the air that will be open in 71 to the outside of load detection sensor 5
The gas vent of discharge.
In addition, as described above, in load detection sensor 5, the 2nd contact portion 63 of the 2nd electrode slice 60 is formed as plate
Spring, and be in relative to the sheet surface of sheet metal 61 and generate plastic deformation and always inclined state.Therefore, as shown in figure 9,
2nd contact portion 63 is detached from out of spacer 70 the opening 72 formed by notch, and the 1st contact portion 53 with the 1st electrode slice 50
Contact area AR1 connection.In this way, the 1st contact portion 53 is contacted with the 2nd contact portion 63, to form connection maintenance portion AP.That is,
Even if the 1st contact portion 53 of the 1st electrode slice 50 is to constitute to apply external pressure in the case cover 4 not to load detection sensor cell S U
In the case where also maintain electrical connection connection maintenance portion AP a side component, the 2nd contact portion 63 of the 2nd electrode slice 60 be constitute
The component of another party of connection maintenance portion AP.
As shown in Figure 1, by the way that a pair of of fastening pin 33 of shell 3 is successively inserted through the fixed with passing through of the 1st electrode slice 50
Through-hole 55C, 55D, spacer 70 the fixation fixation through hole 65C of through hole 75C, 75D and the 2nd electrode slice 60,
65D, so that such load detection sensor 5 is fixed on shell 3.At this point, the bottom wall 37 of substrate 51 and shell 3 is located at the
Between 1 electrode 52 and the mounting surface 21S of pedestal 2.Therefore, respectively substrate 51 can be interpreted as propping up on pedestal 2 with bottom wall 37
Hold the bearing part of the 1st electrode 52.In addition, in 3 constantly acting load detection sensor 5 of shell, and then as the dotted line EH in Fig. 2 is indicated
The height substantially of 1st electrode 52 and the 2nd electrode 62 is such, in the state that shell 3 is placed in pedestal 2, the 1st electrode 52 with
And the 2nd electrode 62 be in the height between the lower end 102 and upper end 101 of each S-shaped spring 100 engaged for pedestal 2.
In addition, a pair of of connecting pin 34 is inserted in the 1st electricity respectively in the state that load detection sensor 5 is fixed on shell 3
The pin of pole piece 50 through hole 55E, 55F.Be set to as a result, terminal 5A, 5B of the inside of pin through hole 55E, 55F with it is corresponding
Connecting pin 34 contact, and be electrically connected via the connecting pin 34 with the bonder terminal of the connector portion of shell 3 31.In addition,
By installing case cover 4, thus the front end in switch press portion 43 as described above with the 2nd electrode 62 in switch SW and the
The opposite side contacts in 1 electrode, 52 side.
Figure 10 is the figure for indicating to be fixed on the equivalent circuit of load detection sensor 5 of shell 3.As shown in Figure 10, making
Between a pair of terminal 5A, 5B for the circuit end of load detection sensor 5, it is connected with switch SW (the 1st electrode 52 and the 2nd
Electrode 62) with connect maintenance portion AP (the 1st contact portion 53 and the 2nd contact portion 63).Between switch SW and a pair of terminal 5A, 5B
Electrical connection, and connect via a pair of terminal 5A, 5B with bonder terminal 3A, 3B of the setting of connector portion 31 in shell 3.
In addition, as described above, resistance 54 is electrically connected with the 1st electrode 52 and the 1st contact portion 53, therefore resistance 54 is in parallel
It is electrically connected with switch SW.Therefore, if switch SW is turned on, compared with the case where switch SW is in an off state, end
Resistance value decline between sub- 5A, 5B.
Next, the detection to load is illustrated.
If people is seated at seat unit, move the following table of seat cushion SC downwards because of the load of people.At this point, in the presence of
Make the lower surface of seat cushion SC relative to the inclined feelings in S-shaped spring face including each S-shaped spring 100 because of the load of people
Condition.Moreover, in the present embodiment, the lower surface of seat cushion SC is contacted with the upper end 22U of a pair of of hook portion 22.Therefore, even if seat
The lower surface for padding SC is tilted relative to S-shaped spring face as described above, also due to the upper end 22U of a pair of of hook portion 22 is to seat cushion SC
Lower surface pressed, thus to a certain extent mitigate seat cushion SG lower surface inclination.
If the lower surface of seat cushion SC is further moved downwards, the lower surface of seat cushion SC is by the upper end of a pair of of hook portion 22
22U pressing, to be contacted in deformation with the upper surface 47S of case cover 4.Although at this point, the lower surface of seat cushion SC as it is above-mentioned that
It is alleviated to sample inclination, but there are still tilt to a certain degree.In this case, the lower surface of seat cushion SC also relative to
The mounting surface 21s of the pedestal 2 engaged on S-shaped spring 100 is tilted, so that the lower surface of seat cushion SC is also relative in mounting surface 21S
The upper surface 47S of the case cover 4 of the load detection sensor cell S U of upper fixation is tilted.
If the lower surface of seat cushion SC is further moved downwards, the upper surface 47S of the lower surface of seat cushion SC to case cover 4
It is pressed.At this point, in the lower surface of seat cushion SC as described above relative in the inclined situation of upper surface 47S of case cover 4,
Since case cover 4 can be tilted centered on the front end of the axle portion that is, switch press portion 43 that contact with load detection sensor 5
Ground rotation, so upper surface 47S is mobile in a manner of making relative to the angle change of mounting surface 21S.Therefore, the upper table of case cover 4
Face 47S can be with the following table plane-plane contact of seat cushion SC.
Moreover, if the lower surface of seat cushion SC is further moved downwards, due to as described above in case cover 4 and shell
It is formed between body 3 and has the gap GA, so case cover 4 moves downwards in the range of the GA of the gap.
Figure 11 is the figure for indicating the on-state of load detection sensor 5.By the movement downward of case cover 4,
To which the front end in switch press portion 43 presses the 2nd electrode 62, and the 2nd electrode 62 and the 1st electrode as illustrated in fig. 11
52 contacts, are thus turned on the switch SW of load detection sensor 5.Therefore, the resistance value between a pair of terminal 5A, 5B
It is lower, the variation of the resistance is detected by vehicle (not shown) with control unit via bonder terminal 3A, 3B.In this way, inspection
It measures by the load for generation of taking one's seat.
Also, in Fig. 3, the state that case cover 4 so moved downwards and detected load is shown with chain-dotted line.
Wherein, in order to avoid the complication of attached drawing, the appearance that the switch SW of load detection sensor 5 is connected is omitted in Fig. 3.1st
Electrode 52 due to being arranged on the substrate 51 as described above, so hardly bending.Therefore, the 1st when load is detected
The position in the face of 62 side of the 2nd electrode of the contact surface of electrode 52 and the 2nd electrode 62 and the 1st electrode 52 when load is not detected
It is unanimous on the whole.The height of the contact surface of the 1st electrode 52 and the 2nd electrode 62 when detecting load is dotted line EH as illustrated in fig. 3
Height, be located at the position more on the lower of upper end 101 than each S-shaped spring 100, and be located at upper end 101 and lower end
Between portion 102.
In addition, the shell as shown in the dotted line SHS in Fig. 3, when detecting load, in load detection sensor cell S U
The upper surface 47S of cover 4 is located at more top than the upper end 101 of each S-shaped spring 100 of the locking of each hook portion 22 for pedestal 2
The position of side.Also, the upper surface 47S of case cover 4 is located at than being locked to each of each S-shaped spring 100 in pedestal 2 at this time
The position of the upper end 22U of hook portion 22 more on the lower.As described above, in the present embodiment, the upper surface 47S of case cover 4
In the state that load is not detected, become the position lower than the upper end 22U of hook portion 22.Therefore, from load is not detected
State to detect load state shift stage in, case cover 4 moves in the plate thickness of the upper end 22U of hook portion 22.
That is the shift motion of the upper surface 47S of case cover 4 is formed as smaller than the plate thickness of the upper end 22U of hook portion 22.
As described above, in the load detecting device of present embodiment 1, the press surface pressed by seat cushion SC is also
That is the angle of the mounting surface 21S relative to pedestal 2 of the upper surface 47S of case cover 4 generates variation.Therefore, even if in seat cushion SC
Lower surface inclined degree generate variation and decline in the case where, upper surface 47S can also follow the inclination.Therefore, upper table
The lower surface of face 47S and seat cushion SC suitably face contact and be pressed.Therefore, load detecting device according to the present embodiment,
Load can suitably be detected.
In addition, in the load detecting device 1 of present embodiment, for the angled manner of case cover 4, seat unit
Front-rear direction it is bigger than left and right directions degree.That is, for case cover 4 upper surface 47S relative to mounting surface 21S angle change
For change amount, compared with the left and right directions of seat unit, the variable quantity on front-rear direction is larger.However, the people generally to take one's seat
Seated position is in front-rear direction than having more individual differences in the lateral direction.Therefore, the lower surface of seat cushion has and right and left
To compared to the trend that angle more significantlys change in the longitudinal direction.But due to upper surface 47S as described above and mounting surface
The variable quantity of angle on the front-rear direction of seat unit formed by 21S is bigger than the variable quantity of the angle on left and right directions, thus
Upper surface 47S can follow the inclination of the lower surface of seat cushion SC.Therefore, in ground as in the present embodiment load detecting device 1
In the case where for detection device of taking one's seat used in seat unit, it can more suitably detect and take one's seat.
In addition, load detection sensor cell S U has switch press portion in the load detecting device 1 of present embodiment
43, which be formed as one with the upper surface 47S of case cover 4 and from the upper surface side 47S towards pedestal 2
The axle portion that the side mounting surface 21S extends, upper surface 47S are rotated centered on the front end in switch press portion 43.Therefore, can either simplify
The structure of load detection sensor unit, and can suitably make the angle change of the upper surface 47S of case cover 4.In addition, due to
Switch press portion 43 as axle portion extends towards the side mounting surface 21S of pedestal 2, and with the front end in switch press portion 43 is
Heart rotation, so switch press portion 43 does not directly bear load and passes through the press surface as load detection sensor cell S U
Upper surface 47S bears pressing force, and thus, it is possible to the upper tables in the bottom surface and load detection sensor cell S U for reducing seat cushion SC
It is rotated while the friction of face 47S.Also, in the load detecting device of present embodiment 1, the switch as axle portion is pressed
Splenium 43 presses the 2nd electrode 62 with front end.That is, axle portion doubles as the casting die pressed electrode.Therefore, with pressing electrode
The case where component is formed as different components with axle portion is compared, and number of components can be reduced, and can more inexpensively constitute.In addition,
In the above-described embodiment, although being formed as the front end of the clock switch press section 43 other than when detecting load with
The structure that load detection sensor 5 contacts, but the clock switch press section 43 other than can also being formed as when detecting load
The structure that is not contacted with load detection sensor 5 of front end.
In addition, the load detecting device 1 of present embodiment has pedestal 2, the Yi Jizai for being locked to a pair of of S-shaped spring 100
Lotus detection sensor unit SU.Load detection sensor cell S U include it is mutually opposed and when detecting load by seat
Pad SC pressing force and a pair of electrodes that is, the 1st electrode 52 for contacting and the 2nd electrode；And above-mentioned a pair is supported on pedestal 2
The bearing part of electrode.Moreover, when detecting load by the press surface of the seat cushion SC load detection sensor cell S U pressed
That is, upper surface 47S is located at height identical with the upper end 101 of each S-shaped spring 100 engaged for pedestal 2 or compares upper end
The contact surface of the upper position in portion 101, a pair of electrodes is located at than the upper end of each S-shaped spring 100 engaged for pedestal 2
101 position more on the lower.
For configuring in the lower surface of the seat cushion SC on S-shaped spring 100, exist in the pedestal for being locked to S-shaped spring 100
The trend that 2 22 part of hook portion deforms to a greater degree than surrounding.But even if the lower surface of seat cushion SC so deforms, seat
It pads the position Chong Die with pedestal 2 in the lower surface of SC to be also difficult to more bend to downside than the upper end 101 of S-shaped spring 100, separately
Outside, even if in the case where the upper end 101 than S-shaped spring 100 is more bent to downside, load is detected in the lower surface of seat cushion SC
The power that device 1 is pressed is also smaller.But load detecting device 1 according to the present embodiment, due to what is pressed by seat cushion SC
Upper surface 47S is located at the position more upper than the upper end 101 of S-shaped spring 100 as described above, so can be by seat cushion SC
It suitably presses, so as to suitably detect load.
In addition, the 1st electrode 52 and the contact surface of 62 this pair of electrodes of the 2nd electrode are located at the upper end than S-shaped spring 100
101 position more on the lower.Therefore, the bearing part of shell 3 of a pair of electrodes, substrate 51 etc also position is supported on pedestal 2
In the position of the upper end 101 than S-shaped spring 100 more on the lower.In this way, to be located at than S-shaped spring 100 upper end 101 more
The power that bearing part on the lower applies becomes: passing through the upper end of a pair of of the S-shaped spring 100 engaged for pedestal 2 towards downside
Power between 101.Thus, for example even if more being leaned in the lower surface from seat cushion SC to the upper end 101 being located at than S-shaped spring 100
In the case that the upper surface 47S of the case cover 4 of upside applies inclined power, also to the upper end 101 being located at than S-shaped spring 100
Bearing part more on the lower applies close to the direction vertical relative to the S-shaped spring face being made of each S-shaped spring 100
Power.Therefore, it is able to suppress the positional shift etc. being located between the bearing part more on the lower of upper end 101 than S-shaped spring 100.
Therefore, the load detecting device 1 of present embodiment is able to suppress the deterioration of detection accuracy.
In addition, the 1st electrode 52 and the 2nd electrode 62 are located at for pedestal 2 in the load detecting device 1 of present embodiment
Between the lower end 102 and upper end 101 of each S-shaped spring 100 of locking.Since a pair of electrodes is located at such height position
It sets, so that even if the S-shaped spring for being located at entire surface becomes in the case where applying certain load to the space below seat cushions
Protection walls can be reduced strongly towards the direct acting load of contact portion.Therefore, positional shift of contact portion etc. can be prevented no
Good situation.
In addition, in the load detecting device 1 of present embodiment, being carried for load detection sensor cell S U in pedestal 2
Position of the mounting surface 21S set positioned at the lower end 102 than each S-shaped spring 100 engaged for pedestal 2 more on the lower.Therefore,
The tilting load applied from upside can be more efficiently inhibited to directly act on the mounting surface 21S of pedestal 2, load detection sensing
Position near the mounting surface 21S of device cell S U.For example, when load detecting device 1 is used for seat unit, in occupant so that leg
Bear mode the case where riding on seat surface of overall weight etc., with the common load excessive compared to part application of taking one's seat of scenario in portion
The case where lotus, inferior comparison was effective.Although mounting surface 21S also may be at and S-shaped bullet in addition, different from the embodiment described above
The identical height in lower end 102 of spring 100.
In addition, the upper surface 47S of the case cover 4 when load is not detected is located at than being locked to S-shaped spring in pedestal 2
The position of the upper end 22U of 100 hook portion 22 more on the lower.Therefore, when detecting load, upper end of the seat cushion SC than hook portion 22
Portion 22U is more bent to downside, so that the upper surface 47S to case cover 4 is pressed.Therefore, the opposite of seat cushion SC can be mitigated
Inclination in S-shaped spring face, and be able to suppress and excessive load is applied to upper surface 47S, so as to more improve load
The durability of detection device 1.Although in addition, different from present embodiment, the upper surface of the case cover 4 when being not detected load
47S also may be at height identical with the upper end 22U of hook portion 22.Even if in this case, being also able to suppress to upper surface
47S applies excessive load, so as to improve the durability of load detecting device 1.In addition, the bottom surface from seat cushion SC can be made
It has been contacted with load detection sensor cell S U, the deflection until load detection sensor cell S U detects load is pole
It is micro.Therefore, the shape of the bottom surface of seat cushion SC when not applying load and the shape of the bottom surface of seat cushion SC when applying load are several
It is identical, to be so-called deterioration for seat cushion SC deformation as caused by aging, higher stability can be played.
In addition, in the load detection sensor 5 of present embodiment, via the 1st contact portion 53 of the 1st electrode slice 50 and
2nd contact portion 63 of 2 electrode slices 60 makes the circuit position for being formed in the 1st electrode slice 50 and the circuit for being formed in the 2nd electrode slice 60
Position is in the conductive state always.Therefore, a pair of terminal 5A, 5B can be respectively configured in the 1st electrode slice 50.It can in this way, providing
In the load detection sensor 5 of the 1st electrode slice 50 configuration a pair of terminal.
In addition, in the 2nd electrode slice 60 includes the 2nd contact portion 63 in the load detection sensor 5 of present embodiment
Position becomes the leaf spring that the 2nd contact portion 63 is pressed on to the 1st contact portion 53.Therefore, it can not need for by the 1st contact portion
53 and the 2nd contact portion 63 is maintained at the other component of connection status always.Therefore, be able to suppress number of components increase and can be real
Now minimize.
In addition, in the load detection sensor 5 of present embodiment, the electrode slice of 43 side of switch press portion that is, the 2nd electricity
Pole piece 60 has the sheet metal being made of metal plate in the position Chong Die with the position for being provided with the 1st electrode 52 and the 2nd electrode 62
61.Also, in the present embodiment, which doubles as the 2nd electrode 62.As described above, having load detection sensing
In the load detecting device 1 of device cell S U, if the following table of seat cushion SC is moved downwards and is carried out to the upper surface 47S of case cover
Pressing then makes sheet metal 61 be switched on and off the pressing of press section 43 because of the pressing force.Pressing of the sheet metal 61 because of the sheet metal 61
And bend, the electrode of the side configured with sheet metal 61 that is, the 2nd electrode is also pressed because of the flexure, then with the 1st electrode
52 contact and make switch connection.However, metal is unlikely to change flexible in the case where temperature generates variation.Therefore,
The influence of 2nd electrode slice 60 generated by heat is less, to even if carry out using load under hot environment, low temperature environment
The sensitivity of detection sensor 5 is also stable, is able to suppress the error detection taken one's seat etc..In addition, since switch press portion 43 presses gold
The a part for belonging to piece 61 can be detected suitably and be taken one's seat so sheet metal 61 can be made suitably to be bent.In addition, metal with
Resin, which is compared, is difficult to generate creep, therefore even if a part is switched on and off the pressing of press section 43, it is also difficult to cause to press to sheet metal 61
Trace.It therefore, can according to the load detecting device of the present embodiment of the load detection sensor cell S U with above structure
Enough suitably detections are taken one's seat the equal error detection for being able to suppress and taking one's seat as caused by impression etc. etc. again.In addition, due to being pressed as switch
2nd electrode slice 60 of the electrode slice of 43 side of splenium is made of metal plate, so metal plate becomes at least part of electrode, thus
Can either suppression component number of packages can suitably detect and take one's seat again.In addition, since the 2nd electrode slice 60 is metal, so can subtract
Less breakage etc., can be improved durability.Also, since the 2nd contact portion 63 as leaf spring in the 2nd electrode slice 60 is also gold
Belong to, so being capable of increasing the 2nd contact portion 63 for being formed as the leaf spring compared with the case where a part of resin sheet becomes leaf spring
Malleability and plasticity.Therefore, it can reduce and be formed as the 2nd contact portion 63 of leaf spring and fracture equal breakages, to improve the leaf spring
Durability.
In addition, the substrate 51 for becoming the sheet material of the 1st electrode slice 50 has in the load detection sensor 5 of present embodiment
There is the face F1 from a side opposed with the 2nd electrode slice 60 to penetrate through to the 1st through hole 55A of the face F2 of another party.In addition, the 1st
Face F2 of the electrode 52 and the 1st electroconductive component CPA being arranged in the 1st through hole 55A with another party in substrate 51
The circuit position of configuration is electrically connected.It therefore, can be in the terminal 5A of the face F2 of another party of substrate 51 one side of taking-up.Such as this implementation
Mode is such, also can configure terminal 5A in the pin different from the 1st through hole 55A inside of through hole 55E.Therefore, exist
Become simple in the case that load detection sensor cell S U is connect with other the equal electronic components of connector portion 31.In addition, energy
Enough face F2 that circuit position is set to another party, there is no need to the face F1 in a side, and circuit position is arranged, and can reduce by one
The bumps that the circuit position of the face F1 of side generates.Thereby, it is possible to stablize the sensitivity of load detection sensor 5.
Also, in the load detection sensor of present embodiment 5, the opening of the surface side of a side of the 1st through hole 55A
The region configured with the 1st electrode 52 in the face F1 of a side of substrate 51.In addition, the 1st through hole 55A has airport
SP, airport SP via the electrode through hole 52A for being set to the 1st electrode 52, be connected to the 1st electrode 52 and the 2nd electrode 62 it
Between opening 71.Therefore, the 1st through hole 55A is not only used for that the 1st electrode 52 of the face F1 of a side of substrate 51 will be configured at
In the connection hole that the surface side of another party of the substrate 51 is electrically connected with circuit position, also as by the air of spacer to outside
The gas vent of discharge.Therefore, compared with the case where connection hole is with gas vent is respectively set, it can be improved the durable of substrate 51
Property.In addition, space can be saved without in addition setting gas vent.
Also, in the load detection sensor of present embodiment 5, the substrate 51 for becoming the sheet material of the 1st electrode slice 50 exists
The position different from the 1st through hole 55A has and penetrates through from the face F1 of a side opposed with the 2nd electrode slice 60 to another party's
The 2nd through hole 55B of face F2.In addition, the 1st contact portion 53 passes through the 2nd electric conductivity portion that is arranged in the 2nd through hole 55B
Part CPB, to be electrically connected with the circuit position configured the face F2 of another party in substrate 51.It therefore, can be in the another of substrate 51
The face F2 of one side takes out a pair of terminal 5A, 5B.It as in the present embodiment, also can be in the pin different from the 1st through hole 55A
Terminal 5A, 5B are configured with the inside of through hole 55E, 55F, therefore, by load detection sensor cell S U and connector portion 31
Become simple in the case where Deng the connection of other electronic components.In addition, circuit position can be set to the face F2 of another party, therefore
Circuit position is set without the face F1 in a side, the bumps as caused by the circuit position of the face F1 of a side can be reduced.As a result, can
Enough stablize the sensitivity of load detection sensor 5.
Also, in the load detection sensor of present embodiment 5, there is the face F2 for the another party for being configured at substrate 51 simultaneously
And the resistance 54 that the 1st electrode 52 is connected with the 1st contact portion 53.Therefore, even if in the biggish situation of thickness of resistance 54,
It can be avoided the case where deteriorating the sensitivity of load detecting device 1.
In addition, in the present embodiment, the circuit position of the 1st electrode slice 50 and resistance 54 are set to the another of substrate 51
The face F2 of side, a pair of terminal 5A, 5B are arranged in pin in through hole 55E, 55F.It therefore, can be from the face F1 of a side of substrate 51
Component other than 1st electrode 52 and the 1st contact portion 53 is excluded.Therefore, it can be eliminated in the face F1 of a side of substrate 51
The bumps generated by other component, can more improve the sensitivity of load detecting device 1.
(the 2nd embodiment)
Next, being illustrated to the 2nd embodiment of the invention.In addition, when being illustrated to present embodiment, it is right
The identical or same constituent element of 1 embodiment of Yu Yu marks identical reference numbers, and omits in addition to especially saying
Repeat description except bright situation.
Figure 12 is the figure for indicating the 2nd embodiment of load detecting device of the invention.As shown in figure 12, present embodiment
Load detecting device 1a have: pedestal 2；And the load different from the load detection sensor cell S U of the 1st embodiment
Detection sensor unit SUa.Load detection sensor cell S Ua is placed on the mounting surface 21S of pedestal 2.Present embodiment
Load detection sensor cell S Ua have lower frame 56, upper ledge 66, a pair of electrodes 52,62 and be made of helical spring more
A spring members 76.
Lower frame 56 has bottom wall 57 and frame wall 53.Bottom wall 57 be formed as peripheral part contacted with the mounting surface 21S of pedestal 2,
The shape that central part rises in a manner of from mounting surface 21S separation.In addition, connecting framed wall 58, frame wall in the periphery of bottom wall 57
58 vertically rise relative to the mounting surface 21S of pedestal 2.In addition, being provided with the 1st electricity on the upper surface of the central part of bottom wall 57
Pole 52.1st electrode 52 is for example formed as structure identical with the 1st electrode 52 of above embodiment.
Upper ledge 66 has roof 67 and frame wall 68.Roof 67 is formed generally as after inverting upside down the bottom wall 57 of lower frame 56
Shape.In addition, connect framed wall 68 in the periphery of roof 67, frame wall 68 is to surround the side of the outer peripheral surface of the frame wall 58 of lower frame 56
Formula hangs down towards the mounting surface 21S of pedestal 2.But it is arranged between the frame wall 58 of lower frame 56 and the frame wall 68 of upper ledge 66 seamed
Gap GA.In addition, being provided with the 2nd electrode 62 on the lower surface of the central part of roof 67.2nd electrode 62 is formed as and above-mentioned reality
Apply the identical structure of the 1st electrode 52 of mode.
Pass through multiple spring members 76 between the peripheral part of the roof 67 of the peripheral part and upper ledge 66 of the bottom wall 57 of lower frame 56
And it connects.In the state of separation between the 1st electrode 52 and the 2nd electrode 62, upper ledge 66 is supported by above-mentioned multiple spring members 76.
In the state that upper ledge 66 is so supported, the lower surface of the upper surface 67S and seat cushion SC of the peripheral part of roof 67 are across rule
Fixed distance and it is opposed.Upper surface 67S is formed as the planar of annular.Upper surface 67S is the face pressed by seat cushion SC, and
It is the press surface of the load detecting device in this variation.
In addition, in the present embodiment, as described above, being set between the frame wall 58 of lower frame 56 and the frame wall 68 of upper ledge 66
It is equipped with gap GA.Therefore, in the range of the GA of gap, upper ledge 66 can be tilted relative to lower frame 56.Therefore, along pedestal 2
Mounting surface 21S direction observation load detecting device 1a in the case where, upper ledge 66 including the 67S of upper surface can so that
The mode of the angle change relative to mounting surface 21S of the upper surface 67S of upper ledge 66, it is mobile relative to mounting surface 21S.
In addition, being formed as centered on the front end in switch press portion 43 in the load detecting device 1 of the 1st embodiment
The structure for rotating upper surface 47S obliquely.On the other hand, the conduct press surface of the load detecting device 1a of present embodiment
Upper ledge 66 upper surface 67S, when being moved in an inclined manner relative to mounting surface 21S not especially determine datum mark.In addition,
In the present embodiment, can also identically as the 1st embodiment, for upper ledge 66 upper surface 67S relative to mounting surface
For the variable quantity of the angle of 21S, compared with the left and right directions of seat unit, the variable quantity on front-rear direction is larger.In the feelings
Under condition, as long as keeping the gap GA of the frame wall 68 of upper ledge 66 and the frame wall 58 of lower frame 56 bigger i.e. than in the lateral direction in front-rear direction
It can.
In load detecting device 1a, in the state that load is not detected, the position of the upper surface 67S of upper ledge 66
As height identical with SHP shown in the dotted line in Fig. 3.In addition, in the state of detecting load, the upper surface of upper ledge 66
The position of 67S becomes height identical with SHS shown in the dotted line in Fig. 3, the contact surface of the 1st electrode 52 and the 2nd electrode 62 at
For height identical with EH shown in the dotted line in Fig. 3.
Even the load detecting device 1a of this structure, the gradient in the lower surface of seat cushion SC generates variation and declines
In the case where, upper surface 67S can also follow the inclination of the lower surface.Therefore, upper surface 67S and the lower surface of seat cushion SC are appropriate
Ground face contact and be pressed, to also can suitably detect load in the load detecting device 1a of present embodiment.
In addition, in the present embodiment, using helical spring as spring members 76, but for example can also be by leaf spring shape
At.
(the 3rd embodiment)
Next the 3rd embodiment of the invention is illustrated.In addition, when being illustrated to present embodiment, it is right
The identical or same constituent element of 1 embodiment of Yu Yu marks identical reference numbers, and omits in addition to especially saying
Repeat description except bright situation.
Figure 13 is the figure for indicating the 3rd embodiment of load detecting device of the invention.As shown in figure 13, load detection dress
It sets 1b and has pedestal 2 and the load detection sensor cell S ub being made of cover 104 and load detection sensor 105 as master
The structure wanted.
On the point that the pedestal 2 of present embodiment is fixed with switch press portion 125, not with the pedestal 2 of the 1st embodiment
Together.In this way, the pedestal 2 as mounting component has switch press portion 125.In the present embodiment, switch press portion 125 is formed
For the substantially semi-spherical shape convex in upside, and than seat cushion SC hard, if in the fixed switch press of mounting surface 21S of pedestal 2
Portion 125, then switch press portion 125 is in shape outstanding relative to mounting surface 21S, therefore as shown in figure 13, if load is detected
Sensor 105 is positioned in mounting portion 21, then the front end in switch press portion 125 is contacted with load detection sensor 105.It is specific and
Speech, the front end in switch press portion 125 is contacted with the metal plate 160 of aftermentioned load detection sensor 105.
Cover 104 is the cover of a part for the load detection sensor 105 that covering is positioned in mounting portion 21, quite
In the case cover 4 of the 1st embodiment, and be by seat cushion SC press to the switch of load detection sensor 105 carry out by
The pressing component of pressure.Cover 104 has substantially plate-like roof 145.Roof 145 is generally round plate-shaped member.It is pushing up
The periphery of wall 145 is connected with and forms the hook tabs 147 of hook in front end.Each hook tabs 147 is configured to be embedded in the formation of pedestal 2
Through hole, by by each hook tabs 147 be embedded in through hole, thus make hook tabs 147 front end formed hook hook pedestal 2,
Thus cover 104 is inhibited to be detached from.In addition, although not shown, but the state penetrated through in the through hole penetrated through for hook tabs 147 by hook tabs 147
Under, small gap is formed between the periphery and hook tabs 147 of the through hole.
The lower surface 145L generally planar shape opposed with pedestal 2 of the roof 145 of cover 104.In addition, on the top of cover 104
Wall 145 is provided with from lower surface 145L multiple ribs 149 outstanding.Cover 104 cover load detection sensor 105 switch and
In the state that the through hole of pedestal 2 is embedded with each hook tabs 147, above-mentioned rib 149 is inserted in and the perforation for the perforation of hook tabs 147
The different through hole in hole.In this way, covering the lower surface 145L of 104 roof 145 in the state that cover 104 is installed on pedestal 2 and carrying
The region face contact including the position with switch SW of lotus detection sensor 105.In addition, although not shown, but for rib
In the state that the through hole of 149 perforations is penetrated through by rib 149, small seam is formed between the periphery and rib 149 of the through hole
Gap.
In addition, in the present embodiment, 104 are covered identically as switch press portion 125, by the material shape than seat cushion SC hard
At, such as be made of material identical with the case cover 4 of the 1st embodiment.
In this way, in the state that the load detection that composition finishes fills straight 1b and is configured at the lower section of seat cushion SC of seat unit,
The upper surface 145S of the roof 145 of cover 104 is opposed with the lower surface of seat cushion SC across defined distance.Upper surface 145S shape
As planar.Upper surface 145S is the face pressed by seat cushion SC, can be understood as the press surface of load detecting device 1b,
The area of upper surface 145S is formed as the area than the part contacted with load detection sensor 105 in switch press portion 125
Greatly.
Load detection sensor 105 has: switch plate 150 and metal plate 160 with switch SW.150 shape of switch plate
As the thin film switch of sheet, have: on the 1st insulating trip 151s configured with the 1st electrode 151e the 1st electrode slice 151,
Spacing body 153 and the 2nd electrode slice 152 that the 2nd electrode 152e is configured on the 2nd insulating trip 152s.
In the state that above-mentioned 1st electrode slice 151, spacer 153 and the 2nd electrode slice 152 are successively pasted, the 1st electricity
2nd electrode 152d of the 1st electrode 151e of pole piece 151 and the 2nd electrode slice 152 across the opening of spacer 153 and it is opposed, from
And constitute switch SW.
In addition, metal plate 160 is made of the plate of flexible metal.As the material of metal plate 160, such as can lift
Copper, stainless steel etc..Metal plate 160 is when Chong Die with switch plate 150, the switch SW of overlay switch piece 150.Specifically, by
Figure 13 is it is found that the side opposite with spacer 153 that is set to the 2nd electrode slice 152 of metal plate 160 is (opposite with the side seat cushion SC
Side), and the 2nd electrode 152e positioned at 2 side of pedestal in the 1st electrode 151e, the 2nd electrode 152e is covered from 2 side of pedestal.This
Outside, in the present embodiment, metal plate 160 and switch plate 150 mutually bond.Make the 2nd electrode slice 152 and gold in the above content
It is separately individual for belonging to plate 160, but in the present embodiment, since metal plate 160 is bonded in the 2nd insulating trip 152S, so metal
Plate 160 is formed as one with the 2nd electrode slice 152.Thus, it is also possible to be interpreted as by metal plate 160, the 2nd insulating trip 152s and
2nd electrode 152e forms the 2nd electrode slice.
The load detection sensor 105 of above structure is configured as described above in the mounting portion 21 of pedestal 2.Specifically
For, metal plate 160 and the switch plate 150 with switch SW are located in mounting portion 21, the preceding end in contact in switch press portion 125
In the region Chong Die with switch SW of metal plate 160.The area ratio switch SW's that switch press portion 125 is contacted with metal plate 160
The area of 2nd electrode 152e is small.In addition, metal plate 160 and pedestal 2 are non-adhering.In this state, 104 covering load detection of cover
Sensor 105, to assemble load detecting device 1b.In the state of so assembling load detecting device 1b, 104 top is covered
The lower surface 145L and 105 face contact of load detection sensor of wall 145.
If such load detecting device 1b is configured at seat unit and people is seated at the seat unit, because of the load of people
And move the following table of seat cushion SC downwards, so that the lower surface of seat cushion SC is contacted with the upper surface 145S of cover 104, and press
The entire surface of upper surface 145S.Then, it if the lower surface of seat cushion SC is further moved downwards, is born by upper surface 145S
Pressing force from seat cushion SC concentrates on switch press portion 125, so that the 2nd electrode slice 152 is scratched because of the flexure of metal plate 160
Song connects as a result, the 2nd electrode 152e is contacted with the 1st electrode 151e so that the switch SW of load detection sensor 105 becomes
Logical state.In this way, the electrode of a side of 125 pairs of the switch press portion of present embodiment switch SW presses, therefore it is quite
In the switch press portion 43 of the 1st embodiment, and switch press portion 125 can be interpreted as axle portion.But shown in Figure 13
In example, the height of axle portion is suppressed to lower.
In the load detecting device 1b of present embodiment, for cover 104, the front end with switch press portion 125 is
The angle of the mounting surface 21S relative to pedestal 2 of benchmark can change with load detection sensor 105.That is, by seat cushion SC
It the press surface of pressing that is, covers 104 angle relative to mounting surface 21S of upper surface 145S and can generate variation.Therefore, exist
The gradient of the lower surface of seat cushion SC generates variation in the case where decline, and upper surface 145S can follow inclining for the lower surface
Tiltedly.Therefore, the lower surface of upper surface 145S and seat cushion SC suitably face contact and be pressed, thus in the load of present embodiment
In detection device 1b, load also can be suitably detected.
In addition, in the load detecting device 1b of present embodiment, than seat cushion SC hard switch press portion 125 to metal
A part of plate 160 is pressed, therefore metal plate 160 can be made suitably to be bent, and can suitably be detected and be taken one's seat.In addition,
Metal is difficult to generate creep compared with resin, therefore even if a part is switched on and off the pressing of press section 125, it is also difficult to metal plate
160 cause impression.Therefore, load detecting device 1b according to the present invention, can either suitably detect and take one's seat, but be able to suppress by
The error detection taken one's seat caused by impression etc..
More than, load detecting device of the invention is illustrated by taking above embodiment as an example, but the present invention is not
It is defined in above embodiment.
For example, as long as load detecting device of the invention, which can correspond to the test object object for being detected load, carries out load
Whether there is or not detection, just have application possibility.That is, in the above-described embodiment, configuring load in the lower section of the seat cushion SC of seat
Detection device, and the presence or absence of taking one's seat to people is detected, but is not limited to the above embodiment, and can also use its other party
Formula.Such as the mode for being configured at the lower section of seat cushion of Bed with special provision for nursing can be enumerated.Even such mode, in the lower surface of seat cushion
Gradient generate variation and decline in the case where, also can suitably detect load.
In addition, in the above-described embodiment, on the front-rear direction and left and right directions of seat unit, being formed so that work
For press surface upper surface 47S, 67S relative to mounting surface 21S angle generate variation mode, make upper surface 47S, 67S
The structure mobile relative to mounting surface 21S.But the present invention is not limited to this.For example, it is also possible to only in the longitudinal direction,
In a manner of the angle relative to mounting surface 21S to make press surface generates variation, keep press surface mobile relative to mounting surface 21S.
In this case, it for example, being configured to the axis that there is load detection sensor cell S U the left and right directions along seat unit to extend, presses
Pressure surface only moves (rotation) centered on the axis in the longitudinal direction.Conversely, being also configured to load detection sensor
Cell S U has the axis that the front-rear direction along seat unit extends, and press surface is only moved in the lateral direction centered on the axis
(rotation).
In addition, in the first embodiment described above, the 3rd embodiment, in the front-rear direction and left and right directions of seat unit
On, it is also configured to make in a manner of making the angle relative to mounting surface 21S of upper surface 47S comparably generate variation
Surface 47S is mobile relative to mounting surface 21S.
In addition, being configured to the axle portion extended from upper surface 47S towards the side mounting surface 21S that is, switch in the 1st embodiment
The front end of press section 43 presses the 2nd electrode 62 of the electrode of the side as switch SW.But to switch SW carry out by
The component of pressure can also be formed as respective different structure from the axle portion of the front end with the rotation center for constituting upper surface 47S,
It can also be by carrying out reverse configuration up and down to load detection sensor 5, thus as the 3rd embodiment at switch SW
Side is provided with axle portion.
In addition, load detection sensor cell S U has case cover 4 in the first embodiment described above, in the 3rd embodiment
Middle load detection sensor cell S Ub has cover 104, but in the present invention, if there is the press surface pressed by seat cushion, and
And the angle change relative to mounting surface of press surface entirety, can also be just not provided with as the 2nd embodiment case cover 4,
Cover 104.
In addition, shell 3 is not required in the 1st embodiment.It in this case, can also be such as the 3rd embodiment
The case cover 4 of 1st embodiment like that, is directly configured at pedestal 2 by cover 104.
In addition, metal plate 160 is not required structure in the 3rd embodiment.In this case, switch press portion 125
The 2nd electrode slice 152 can also directly be pressed.In addition, in the 3rd embodiment, for load detection sensor 105, in pedestal 2
Side is provided with the switch press portion 125 as axle portion, but cover 104 can also be provided with switch identically as the 1st embodiment
Press section 125.At this point, from the viewpoint of the inhibition of the impression of the 1st electrode slice 151, preferably in the 1st electrode slice 151 and as cover
Metal plate 160 is set between the switch press portion 125 of 104 a part.
In addition, the 1st electrode 52 and the 2nd electrode 62 are located at each S engaged for pedestal 2 in the first embodiment described above
Between the lower end 102 and upper end 101 of shape spring 100.But in the present invention, as long as detecting the 1st electrode when taking one's seat
The contact surface of 52 and the 2nd electrode 62 is located at the position more on the lower of upper end 101 than S-shaped spring 100, the 1st electrode 52 with
And the 2nd electrode 62 can not be located at S-shaped spring 100 lower end 102 and upper end 101 between.For example, the 1st electrode 52 with
And the 2nd electrode 62 can also be located at the position more on the lower of lower end 102 than S-shaped spring 100.In this case, it detects
The contact surface of the 1st electrode 52 and the 2nd electrode 62 when taking one's seat can also be positioned at the lower end 102 than S-shaped spring 100 more on the lower
The position of side.
In addition, in the first embodiment described above, for load detection sensor cell S U mounting mounting surface 21S be located at than
For the position more on the lower of lower end 102 for each S-shaped spring 100 that pedestal 2 engages, and mounting surface 21S can also be formed
For height identical with the lower end 102 of S-shaped spring 100.But in the present invention, mounting surface 21S can also be formed as comparing S
The lower end 102 of shape spring 100 is high and the height lower than upper end 101.But for can more efficiently inhibit from upside
The tilting load of application directly acts near the mounting surface 21S of the mounting surface 21S of pedestal, load detection sensor cell S U
The reasons why position, it is preferable that mounting surface 21S be located at than each S-shaped spring 100 engaged for pedestal 2 lower end 102 more on the lower
Position or height identical with the lower end 102 of S-shaped spring 100 position.
In addition, detecting that the upper surface 47S of the case cover 4 when taking one's seat is located at than pedestal 2 in the first embodiment described above
In the hook portion 22 for being locked to S-shaped spring 100 the position more on the lower upper end 22U, in addition can also be formed as and hook portion
The 22 identical height of upper end 22U.But in the present invention, detect that the upper surface 47S of the case cover 4 when taking one's seat can also
To be located at the position more upper than the upper end 22U of hook portion 22.But upper surface 47S was applied for being able to suppress
The reasons why load of degree, preferably detects that the upper surface 47S of the case cover 4 when taking one's seat is located at the upper end 22U phase with hook portion 22
With height position or position than upper end 22U more on the lower.
In addition, the upper surface 47S that the case cover 4 when taking one's seat is not detected is located at than pedestal in the first embodiment described above
In addition the upper end 22U of hook portion 22 in 2 low position can also be formed as height identical with upper end 22U.But
In the present invention, as long as detecting each S-shaped spring that the upper surface 47S of the case cover 4 when taking one's seat is located at and engages for pedestal 2
The position or the position more upper than upper end 101 of the 100 identical height in upper end 101, are not detected when taking one's seat
The upper surface 47S of case cover 4 can be located at the position more upper than the upper end 22 of the hook portion 22 in pedestal 2.In the feelings
Under condition, detect that the upper surface 47S of the case cover 4 when taking one's seat can also be formed as height identical with the upper end 22U of hook portion 22
Degree.
In addition, the average height position of the lower surface of seat cushion SC when taking one's seat is not detected in the first embodiment described above
The position upper positioned at the upper surface 47S than case cover 4.But the present invention is not limited to this, it is not detected when taking one's seat
The average height position of lower surface of seat cushion SC can also become height identical with the upper surface 47S of case cover 4.But
From the viewpoint of inhibiting the lower surface of seat cushion SC unnecessarily to press the upper surface 47S of case cover 4, preferably such as above-mentioned embodiment party
Formula be not detected like that the lower surface of seat cushion SC when taking one's seat average height position be located at than case cover 4 upper surface 47S more
Upper position.
In addition, in the above-described embodiment, showing the example that pedestal 2 is locked to S-shaped spring, but the example of pedestal 2 is simultaneously
It is not limited to this.For example, it is also possible to which pedestal 2 is arranged on seat bucket seat, seat bucket seat sheet can also be made as pedestal.
In addition, for each component in 1~1b of load detecting device, in addition to above embodiment, above-mentioned variation
Shown in except content, can be suitably combined in the range of not departing from the application purpose, omit, change, known skill
Art it is additional etc..
As described above, according to the present invention, load can suitably be detected and be able to suppress detection accuracy by providing one kind
The load detecting device of deterioration can be applied to such abutment such as seat unit, Bed with special provision for nursing of the vehicles such as vehicle
Pad the device of configuration.
The explanation of appended drawing reference
1,1a, 1b ... load detecting device；2 ... pedestals；3 ... shells；4 ... case covers；5 ... load detection sensors；
21 ... mounting portions；21S ... mounting surface；22 ... hook portions；The upper end 22U ...；41 ... arms；42 ... openings；43 ... switch press portion (axis
Portion)；The upper surface (press surface) of 47S ... case cover；50 ... the 1st electrode slices；51 ... substrates；52 ... the 1st electrodes；53 ... the 1st connect
Point portion；54 ... resistance；56 ... lower frames；The bottom wall of 57 ... lower frames；The frame wall of 58 ... lower frames；60 ... the 2nd electrode slices；61 ... metals
Piece；62 ... the 2nd electrodes；63 ... the 2nd contact portions；66 ... upper ledges；The roof of 67 ... upper ledges；Upper surface (the pressing of 67S ... upper ledge
Face)；The frame wall of 68 ... upper ledges；70 ... spacers；76 ... spring members；100 ... S-shaped springs；The upper end of 101 ... S-shaped springs；
The lower end of 102 ... S-shaped springs；104 ... covers；105 ... load detection sensors；125 ... switch press portions (axle portion)；145S…
The upper surface (press surface) of cover；150 ... switch plates；151 ... the 1st electrode slices；152 ... the 2nd electrode slices；153 ... spacers；
160 ... metal plates；AP ... connection maintenance portion；SC ... seat cushion；SU ... load detection sensor unit；SW ... switch.
Claims (7)
1. a kind of load detecting device, which is characterized in that have:
Load detection sensor unit, the load detection sensor unit have the press surface pressed by seat cushion and due to described
Press surface is pressed and a pair of electrodes for contacting；And
Pedestal, the pedestal have the mounting surface for loading the load detection sensor unit,
In such a way that the angle relative to the mounting surface for keeping the press surface whole generates variation, keep the press surface whole
It is mobile relative to the mounting surface,
The seat cushion is the seat cushion of seat unit,
The variable quantity of the angle on the front-rear direction of the seat unit at 5 degree hereinafter,
The load detection sensor unit, which has, to be formed as one and from the press surface side to the load with the press surface
The axle portion of surface side extension is set,
The axle portion is pressed by a side of the front end to the pair of electrode,
On the extending direction of the axle portion, the position contacted with the electrode of another party and the axle portion in the electrode of a side
Front end is overlapped.
2. load detecting device according to claim 1, which is characterized in that
The seat cushion is the seat cushion of seat unit,
The variable quantity of the angle on the front-rear direction of the seat unit is than the institute on the left and right directions of the seat unit
The variable quantity for stating angle is big.
3. load detecting device according to claim 1 or 2, which is characterized in that
The press surface is integrally rotated centered on the front end of the axle portion.
4. load detecting device according to claim 1, which is characterized in that
The load detection sensor unit also includes the spacer for being formed with opening；And it is set to the two of the spacer
A pair of electrodes piece in face,
The pair of electrode be set to the face of the spacer side of the pair of electrode slice and across it is described opening and mutually it is right
It sets,
The electrode slice of the axle portion side in the pair of electrode slice is at least Chong Die with the position for being provided with the pair of electrode
Position have metal plate.
5. load detecting device according to claim 4, which is characterized in that
The electrode slice of the axle portion side in the pair of electrode slice is made of the metal plate,
The metal plate becomes at least part of the electrode of the electrode slice of the axle portion side.
6. load detecting device according to claim 4, which is characterized in that
The electrode slice of the axle portion side in the pair of electrode slice includes: insulating trip and is configured at the insulating trip
The metal plate on the face of the axle portion side.
7. load detecting device according to claim 1, which is characterized in that
The variable quantity of the angle on the front-rear direction of the seat unit is at 0.5 degree or more.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015069778 | 2015-03-30 | ||
| JP2015-069778 | 2015-03-30 | ||
| PCT/JP2016/060465 WO2016159123A1 (en) | 2015-03-30 | 2016-03-30 | Load-detecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106458066A CN106458066A (en) | 2017-02-22 |
| CN106458066B true CN106458066B (en) | 2019-08-27 |
Family
ID=57005787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680001508.0A Active CN106458066B (en) | 2015-03-30 | 2016-03-30 | Load detecting device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10486551B2 (en) |
| EP (1) | EP3279030A4 (en) |
| JP (2) | JP6212223B2 (en) |
| CN (1) | CN106458066B (en) |
| WO (1) | WO2016159123A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10600274B2 (en) * | 2017-04-07 | 2020-03-24 | Medsecure Solutions Inc. | Device for the automatic and instant detection of movement of an object |
| WO2019097629A1 (en) * | 2017-11-16 | 2019-05-23 | 三菱電機株式会社 | Probe card, semiconductor measuring device, and semiconductor measuring system |
| WO2019194125A1 (en) * | 2018-04-03 | 2019-10-10 | テイ・エス テック株式会社 | Structure for arranging sensor on seat and vehicle seat |
| JP7121259B2 (en) * | 2018-04-03 | 2022-08-18 | テイ・エス テック株式会社 | Arrangement structure of sensors on seat and vehicle seat |
| JP2019182329A (en) * | 2018-04-16 | 2019-10-24 | テイ・エス テック株式会社 | Structure for arranging sensor to seat and vehicle seat |
| CN108544986A (en) * | 2018-06-13 | 2018-09-18 | 广东安闻汽车零部件有限公司 | A kind of human pressure's sensor |
| DE102018209592A1 (en) * | 2018-06-14 | 2019-12-19 | Hoffmann + Krippner Gmbh | Force measuring device |
| KR102409929B1 (en) * | 2019-09-24 | 2022-06-16 | 위보환 | Fall monitoring system using fall detector |
| JP7511643B2 (en) | 2020-07-01 | 2024-07-05 | 株式会社フジクラ | Load detection sensor unit |
| KR20220029052A (en) | 2020-09-01 | 2022-03-08 | 삼성전자주식회사 | Laser bonding system and laser bonding apparatus |
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| JPS5333792Y2 (en) * | 1972-12-18 | 1978-08-19 | ||
| JPH09240424A (en) | 1996-03-06 | 1997-09-16 | Denso Corp | Occupant detecting device in air bag system |
| JP2002228516A (en) | 2001-01-30 | 2002-08-14 | Mitsubishi Electric Corp | Weight measuring instrument |
| JP4218614B2 (en) * | 2004-08-27 | 2009-02-04 | アイシン精機株式会社 | Seat state detection device, irradiation direction adjustment device for vehicle headlamp, and seating detection device |
| EP2485244A4 (en) * | 2009-09-28 | 2014-07-30 | Nikon Corp | Pressure applying module, pressure applying apparatus, and substrate bonding apparatus |
| JP2011105278A (en) * | 2009-11-20 | 2011-06-02 | Aisin Seiki Co Ltd | Seating detecting device |
| DE102010043416A1 (en) | 2010-11-04 | 2012-05-10 | Mayser Gmbh & Co. Kg | vehicle seat |
| DE102010043417A1 (en) * | 2010-11-04 | 2012-05-10 | Mayser Gmbh & Co. Kg | Seat occupancy switch and vehicle seat |
| US10226127B2 (en) * | 2010-11-25 | 2019-03-12 | Corechair Incorporated | Resistive support mechanism for a chair including user feedback |
| JP5324548B2 (en) | 2010-12-06 | 2013-10-23 | 株式会社フジクラ | Seating sensor and seat device using the same |
| JP5747078B2 (en) * | 2011-06-30 | 2015-07-08 | 株式会社フジクラ | Seat sensor and seat device |
| LU92012B1 (en) * | 2012-05-30 | 2013-12-02 | Iee Sarl | Vehicle seat suspension mat |
| LU92011B1 (en) * | 2012-05-30 | 2013-12-02 | Iee Sarl | Vehicle seat suspension mat |
| JP2014084069A (en) | 2012-10-26 | 2014-05-12 | Fujikura Ltd | Occupant detection device |
| JP5587477B1 (en) | 2013-09-10 | 2014-09-10 | 株式会社フジクラ | Seat device |
| CN106458065B (en) * | 2015-03-30 | 2019-10-15 | 株式会社藤仓 | Load detecting device |
-
2016
- 2016-03-30 EP EP16773004.3A patent/EP3279030A4/en active Pending
- 2016-03-30 US US15/563,293 patent/US10486551B2/en active Active
- 2016-03-30 JP JP2016556910A patent/JP6212223B2/en active Active
- 2016-03-30 CN CN201680001508.0A patent/CN106458066B/en active Active
- 2016-03-30 WO PCT/JP2016/060465 patent/WO2016159123A1/en active Application Filing
-
2017
- 2017-08-09 JP JP2017154619A patent/JP6397546B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US20180072186A1 (en) | 2018-03-15 |
| JP6212223B2 (en) | 2017-10-11 |
| CN106458066A (en) | 2017-02-22 |
| WO2016159123A1 (en) | 2016-10-06 |
| EP3279030A1 (en) | 2018-02-07 |
| US10486551B2 (en) | 2019-11-26 |
| EP3279030A4 (en) | 2018-12-05 |
| JP6397546B2 (en) | 2018-09-26 |
| JPWO2016159123A1 (en) | 2017-04-27 |
| JP2017210235A (en) | 2017-11-30 |
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